Inlet for paper machine



Dec. 27, 1955 w, o s Y INLET FOR PAPER MACHINE Filed July 19, 1954 INVTOR. Bwf w i d State p INLET FOR PAPER MACHINE Willis 0. Hisey, GlensFalls, N. Y., assignor to The Sandy Hill Iron & Brass Works, HudsonFalls, N. Y., a corporation of New York Application July 19, 1954,Serial No. 444,233

3 Claims. (Cl. 9244) This invention relates to inlet structures forpaper making machine and is directed more particularly to stock inletfor Fourdrinier machine.

The principal objects of the invention are the provision of an inletwherein pressure therewithin maybe controlled, a slice lip is adjustableand recirculation when desired is accomplished.

The construction is such that various parts .are readily and easilyadjusted within fine increments all to the end that stock is deliveredto the wire in the desired condi-,

tion for the efficient sheet formation.

All of the above objects I accomplish by means of such structure andrelative arrangements of parts thereof, as will fully appear by aperusal of the description below and by various specific features whichwill be hereinafter set forth.

To the above cited and other ends and with the foregoing and variousother novel features and advantages and other objects of my invention aswill become more readily apparent as the description proceeds, myinven-, tion consists in certain novel features of construction i and inthe combination and arrangement of parts as will be hereinafter moreparticularly pointed out in the claims hereunto annexed and more fullydescribed and referred to in connection with the accompanying drawingswhere in:

Figs. 1 and 2 are more or less diagrammatic side and partial frontelevational views of an inlet embodying the novel features of theinvention; and

Fig. 3 is a cross sectional view of one form of recirculation means.

Referring now to the drawings more in detail, the invention will befully described.

One side wall is represented by 2. There are two such walls verticallydisposed and spaced apart transversely the desired distance and held byone or more transverse members 4 secured at opposite ends thereto.

Stub shafts such as 6 are journalled in the walls 2 and have gearsegments 8 fixed thereto. Reaches such as 10 are fixed at outer ends tothe segments 8 and an elon-' gated former 12 extending transverselybetween the walls 2 has opposite ends secured to the reaches 10. In thisway, the former is supported by the segments.

The former 12 has a longitudinal curved lower or inner face or surface14.

A shaft 16 is journalled in bearings 18 fixed to the frame and haspinions, not shown, fixed thereto and in mesh with the segments 8. Theshaft 16 may be rotated by any means, such as crank 20, for rotating thesegments 8 and thereby the former 12.

Upper and lower plates 22 and 24 extend transversely v of the walls 2.Said plates have portions 22' and 24 spaced to provide a stock entrance26. The upper plate 22 extends upwardly and curving from the entranceand then curves downwardly towards the forward side of the inlet. Thesaid plate will be formed from relatively thin metal and while attachedto members 4 and such other members as there may be, a forward portion25 thereof is thereto at spaced points if desired.

The lower plate 24, as shown, extends upwardly from the entrance 26 andcurves over and forwardly and then downwardly to a portion 30 which maybe termed bottom plate, or apron.

As will be seen, the plates 22 and 24 are arranged to provide anupwardly'extending space which increases in vertical height upwardlyfrom the entrance and then decreases in height forwardly to provide anoutlet for stock between lip 28 and outer end 32 of apron 30. A breastroll is partially indicated by dash lines 31.

A transverse perforated roll indicated by 33 extends between the walls2. This may be of usual form used in connection with inlets and may bedriven or stationary as desired.

, Recirculation of stock is accomplished by inner and outer pipes 34 and36. The outer pipe 36 is fixed to member 22 and has an opening or slot35 in register with an opening or slot of said member 22 as shown. Innerpipe 34 which is connected at one or both ends to the stock supply isrotatable in pipe 36 and has an opening or slot 37 for registering withopening 35. By adjusting the pipe 34 relative to pipe 36 the openingsmay be establish and control pressure within the apparatus and thevelocity of outward flow between 28 and 32. Any other means desired forcontrolling pressure by recirculation may be employed.

A transverse member 40 extends between and is secured to walls 2. Atransverse carrier 42 is slidable up and down relative to member 40.Housings 44 secured to upper sides of walls 2 have gears 46 rotatabletherein. A shaft 48 rotatable in the housings has a hand wheel 50 fixedthereto and worms 52 fixed to said shaft in the housings are in meshwith the gears 46. Threaded stems 54 fixed at lower ends to member 42are in threaded engagement with the gears 46 so that as shaft 48 isrotated in one direction or the other, the member 42 is moved up ordown.

Rods 58 are pivotally connected at lower ends to brackets 60 secured tothe lip 28 of the slice. Upper ends of the rods 58 are pivotallyconnected to lower ends of members 64 which are threaded and inengagement with nuts 64 of the member 42.

The lip of the slice may be roughly adjusted up and down by means ofmembers 54. The rods 58 are connectecl at intervals along the lip of theslice and are independently adjustable for adjusting the slice lip atspaced points as may be desired.

By rotating segments and thereby the former 12, the curvature of plate22 in the vicinity of portion 25 thereof may be varied and the distancebetween said portion and plate 30 may be varied.

Thus with the adjustability of the former and of the slice lip it ispossible to control the outlet of stock from the inlet and incombination with recirculating means for stock recirculation of stock iscontrolled.

The invention may be embodied in other specific forms without departingfrom the essential characteristics thereof. Hence, the presentembodiments are therefore to be considered in all respects merely asbeing illustrative and not as being restrictive, the scope of theinvention being indicated by the appended claims rather than by theforegoing description, and all modifications and variations as fallwithin the meaning and purview and range of equivalency of the appendedclaims are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of theUnitedStates is:

1. An inlet for a paper making machine comprising in combination,transversely spaced side walls, lower and upper elongated wallsextending transversely between said side walls continually from entranceto outlet ends of said inlet, rear ends of said walls being fspaeedapart to form said entrance and extending upwardly and ever forwardly indiverging relation and then forwardly and downwardly in generallyconverging relation to said outlet, said lower wall having an apronportion inwardly of said outlet provided with an extremity, said upperwall having a flexible free slice portion extending inwardly from saidoutlet provided with an adjustable lip adjacent the extremity of theapron, a former rotatably and adjustably mounted between said sidewallsover the flexible slice portion of the upper wall provided with atransverseiy extending convex surface engageable with the upper face ofsaid slice portion for forming the longi: tudinal contour of the sliceportion according to the adjustment of said former, and means foradjusting said lip.

2. An inlet for a paper making machine comprising in combination,transversely spaced side walls, lower and upper elongated wallsextending transversely between said side walls continually from entranceto outlet ends of said inlet, rear ends of said walls being spaced apartto form said entrance and extending upwardly and over forwardly indiverging relation and then forwardly and downwardly in generallyconverging relation to said out-' let, said lower wall having an apronportion inwardly of said outlet provided with an extremity, said upper.wall having a flexible free slice portion extending inwardly from saidoutlet provided with an adjustable lip adjacent the extremity of theapron, a former rotatably and adjustably mounted between said side wallsover the flexible slice portion of the upper wall provided with atransversely extending convex surface engageable with the upper face ofsaid slice portion for forming the longijustment of said former, andmeans for adjusting said lip, and means for recirculating stock oversaid upper wall including a tubular inner member extending between saidwalls having an open end and an outer tubular member concentricallyrelated thereto with passageways between said members and between saidouter member and upper wall.

3. An inlet for a paper making machine comprising in combination,transversely spaced side walls, lower and upper elongated-wallsextending transversely between said side walls continually from entranceto outlet ends of said inlet, rear ends of said walls being spaced apartto form said entrance and extending upwardly and over forwardly indiverging relation andthen forwardly and downwardly in generallyconverging relation to said outlet, said lower wall having an apronportion inwardly of said outlet provided with an extremity, said upperwall having a flexible free slice portion extending inwardly from saidoutlet-provided with an adjustable lip adjacent the extremity of theapron, a former rotatably and adjpstably mounted between said side wallsover the flexible slice portion er the upper wall provided. with atransversely extending convex surface engageable with the upper face'ofsaid slice portion for forming the longitudinal contour of the sliceportion according to the adtudinal contpur of the sliceportion accordingto the ad justment of said former, and means for adjusting said lip, anda perforated roll between said walls and between said side wallsadjacent the slice portion of the upper wall.

FOREIGN PATENTS Germany Dec 17,

